Elevating and conveying mechanism.



110.865,041. PATENTED SEPT. 3,1907. i A. R. HOLMBN.

ELBVATING AND. CONVEYING MBGHANISM.

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AXEL R. HOLMN, OF COLUMBUS, OHIO.

ELEVATING AND CONVEYING MECHANISM.

Specification of Letters Patent.

Eatented Sept. 3, 1907.

Application filed May 31,1907. Serial No. 376,666.

To all whom it may concern:

Be it known that l, AXEL R. HOLMN, a citizen of Sweden, residing atColumbus, in the county of Franklin and State of Ohio, have inventedcertain new and useful Improvements in Elevating and ConveyingMechanism, of which the following is a specification;

My invention relates to a coal handling and conveying mechanism and hasfor its object the provision of a device of this character comprisingcars adapted to elevate material to some distance and a cross conveyerinto which said material is then dumped to be carried off to one side ofthe lifting mechanism, said conveyer being driven 'from the samemechanism that elevates the material and being arranged to runcontinuously in one direction, while the lifting mechanism is reversedat regular intervals.

Further objects and advantages of the invention will be set forth in thedetailed description which now follows.

ln the accompanying drawings: Figure 1 is an end elevation of astructure in which the lifting mechanism and conveyer is located, Fig. 2is a side elevation of said structure, Fig. 3 is a detail side view ofthe ar rangement of pulleys at the top of the structure illustrating across conveyer hereinafter described, Fig. 4 is an end view of the partsshown in Fig. 3, Fig. 5 is a plan view of the parts shown in Fig. 3,and, Fig. G is a section upon line x-.t of Fig. 5.

Like numerals designate corresponding parts in all of the figures of thedrawing.

1t is to be understood that this invention particularly resides in thedriving mechanism shown in Figs. 3, 4, 5 and 6. The lifting mechanismillustrated in Figs. 1 and 2 and the driving drum therefor, are of theusual and well known construction.

1n the drawings, the numeral 5 indicates a drum which is adapted to berotated in either direction. A cable G passes over this drum. Pulleys 7,8 and 9 are mounted upon shafts 10, 11 and 12, said shafts being mountedin bearings 13. These bearings are supported upon beams 14 which arelocated at the top of any desired form of structure indicated at 15. Ahopper 16 is located within thisstructure and cars 17 are adapted totravel vertically in this structure to elevate coal and dump it into thehopper 16. One portion of the cable G passing from the drum 5, passesover the pulley 8 and is then returned to the bottom of the structure 15and securedl to the lowermost car 17 (see Fig. 1). The other portion ofthe cable passing from the drum 5, passes over the pulleys 7 and 9 andis secured to the other car 17. After one of the cars has been elevatedto the top of the structure to dump its load into the hopper, therotation of the drum 5 is reversed and said car is caused to descend,while the other car is lifted. It will therefore be seen that when oneof the cars is being elevated, the pulleys 7, 8 and 9 rotate in onedirection and that when said car is descending, the rotation of thesepulleys is reversed.

As has been before stated, it is the object of the present invention todrive the conveyer mechanism hereinafter described, from these pulleysand yet cause the conveyer to always move in the same direction eventhough the rotation of the pulleys be practically reversed.

Mounted upon the ends of the shafts 11 and l2 are bevel pinions 1S and19, said pinions being .fast upon said shafts. A bevel pinion 20 mesheswith the bevel pinion 18, while a bevel pinion 21 meshes with the bevelpinion 19. A shaft 22 is mounted in bearings 23 and the pinions 21 and22 are loosely mounted upon this shaft. Ratchet wheels 24 are secured tothe shaft 22 and rotate therewith. Pawls 25 are carried by the bevelpinions and are adapted to engage these ratchet wheels, as will behereinafter set forth. A. belt 26 passes over a pulley 27 which is fastupon the shalt 22 and over a pulley 28 to provide lneans for driving themechanism of a cross conveyer indicated at 29. lt is obvious that achain may be substituted for this belt if desired. The detailconstruction of this conveyer, forms no part of the present invention,as any form of conveyer may be utilized for this purpose. lt has beenfound that where the material is elevated and then dumped without theemployment of a cross conveyer, that said material soon, piles upbeneath the dumping mechanism in such manner as to interfere with thepropel` working thereof. By enniloying the cross conveyer, the materialis carried a sufficient distance to one side of the elevating mechanism,to remedy this trouble.

The operation of the device is as follows: When the cable G is moving inthe direction indicated by the arrows a. in Fig. 3, the pulley 9 will berotating to the right. This will consequently rotate the pinion 19 tothe right and will rotate the pinion 21 to the left. This willconsequently rotate the shaft 22 to the left, for the pawl 25 of thepinion 2l, will, at this time, engage the ratchet wheel 24. The pulley27 will consequently be rotated to the left as seen in Fig. 4. When themovement of the cable (i is reversed to lift the other car and the partsare'moving in the direction indicated by the arrows b in Fig. 3, it isapparent that the pull cy 8 will be rotated to the right. At this timethe pawl carried by the pinion. 21 will ride loosely over itsAcorresponding ratchet wheel and will impart no movement; to the shaft22, but movement to the right of the pulley 8 will rotate the pinion 18to the right and will rotate the pulley 20'to the left. At this time thepawl 25 carried by said pinion 20. will engage its corresponding ratchetwheel 24 to impart movement to the shalt 22. lt will therefore be seenthat the movement oi this shaft is always to the leit and that theconveyer 29 will always be driven in one direction, regardless et thereversal of the members from which it is driven.

From the foregoing description, .it will be seen that simple andefficient means are herein provided for accomplishing the objects of theinvention, but while the elements shown and described are well adaptedto serve the purposes lor which they are intended7 it is to beunderstood that the invention is not limited to the details oiconstruction, but includes within its purview such changes yas may bemade within the scope of the appended claims.

What l claim is:

1. In an elevating and conveying,r mechanism, the combination with apair of cars, of a cable connected to said cars the direction of themovement of which is periodically reversed pulleys over which said cablepasses, a conveyer, and connections between said pulleys and saidconveyer adapted to drive said conveyer always in one directionregardless of the reversal of movement of said pulleys.

2. In a lifting and conveyingmechanism, lifting mechanism the directionof movement of which is periodically reversed, a conveyer, andconnections between said lifting' mechanism and said convcyer adapted todrive said conveyer always in one direction regardless of the reversalof movement of the liftingl mechanism.

3. In a device of the character described, the combination with a pairof ears, of a cable the ends of which are secured to said cars, pulleysover which the bight of said cable passes, a conveyer, and connectionsbetween said pulleys and said conveyer adapted to drive said conveyeralways in one direction regardless of the reversal of movement of saidpulleys.

4. ln a lifting and conveyingdevice, the combination with a liftingcable the direction of movement of which is periodically reversed, ofpulleys over which said cable passes, a shaft, a conveyer, a drivingconnection between said shaft and said conveyer, shafts upon which thepulleys are mounted, pinions fast upon said shafts, pinions looselymounted upon the first named shaft and meshing with the iirst namedpinions, means for connectingone of said shafts to the iirst named shaftwhen the cable is moving in one direction, and lmeans for connecting theother of said`pinions to the first named shafts when said cable ismoving in the opposite direction.

In testimony whereof l alix my signature in presence of two witnesses.

AXEL 1i. HOLMN Witnesses FRANK G. CAMPBELL, A. L. PHELPs.

